BORE KIT 95CC

49.5mm piston, 9.5:1 compression

Good boost in torque and midrange when installed alone. Best with our Preferred kit listed above!

INCLUDES: Piston, pin, rings, circlips, headgasket, basegasket.

REQUIRES: Boring, rejetting.

#00299

$165.00

BORE KIT - OVERSIZE FOR 95cc

50mm Piston, 9.5:1 Compression

.020” Oversize for our #00299

INCLUDES: Piston, pin, rings, teflon pin retainers, headgasket.

REQUIRES: Boring.

#00299B

$165.00

BORE KIT 111CC

53.5mm piston, 11:1 compression

Excellent low-end power, quick throttle response and better overall horsepower with this kit.  Works even better when used in our Super Pro kit shown above!

INCLUDES: Piston, pin, rings, circlips, headgasket, basegasket, sleeve.

REQUIRES: Re-sleeving, Boring, Case Machining, rejetting.

#00345

$279.00

BORE KIT - OVERSIZE FOR 111cc

54mm Piston, 11:1 Compression

.020” Oversize for our #00345

INCLUDES: Piston, pin, rings, circlips, headgasket, basegasket.

REQUIRES: Bores into the Powroll sleeve provided with kit #00345.

#00345B

$185.00

122cc AMA-legal kit: 16095RA stroked crank, shown with #00345 bore kit sold above.

4.5mm STROKER

  WITH HEAVY DUTY ROD ASSEMBLY 

54mm total stroke.

104cc’s with 49.5mm piston. 125cc's with 54mm piston

Incredible torque and awesome overall power increase.

INCLUDES: New Rod, pin, needle assembly. Work done on your crank.

REQUIRES: Send in your crank for modification.  Download our Stroker Booklet for details.

RECOMMENDATIONS: Modifications may be required if using other piston/cam brands.

#16095RA

$375.00

CAMSHAFT - RACE GRIND

HARDWELD CAM, INCLUDES CORE CHARGE

Lift .239” IN / .243” EX

This grind is specifically designed to give you the BEST power possible for your Powrolled 90! An awesome increase in mid to top end power when used with our bore kit. Also works as a race grind (top end power) with our high compression piston.

Works with stock springs and retainers.  Includes Bearings.

#12740

$210.00 (on your core)

CAM CHAIN - POWROLL HEAVY DUTY

Stronger than the OEM Honda chain.

#18528

$35.00

2006 & Newer Models

JET KIT

Larger jets for the 2006 TRX90 aren't available from Honda, and stock jetting is extremely lean. Any modifications done to this model will require rejetting. This kit includes 3 larger main jets and a special needle shim, which will work with engines up to 112cc's. We also include part numbers and specialized jetting instructions for our 125cc kits.

KIT INCLUDES: Needle shim, main jet sizes 92, 95 & 98.  Jetting instructions.  Honda part numbers for larger jets.

RECOMMENDATIONS: Works on any engine from stock to 125cc's.

NOTE - Jets are available for the earlier model TRX90 from Honda.  All Powroll orders include jetting information and part numbers to obtain the correct jets.

#21351

$19.00

2006 & Newer Models

EXHAUST - POWROLL SYSTEM

The only aftermarket system built for the TRX 90 that is designed specifically for modified engines.

Includes Tuneable spark arrestor, jet kit #21351 & complete installation instructions.

#18354

$260.00

1993-2005 Models

EXHAUST - POWROLL SYSTEM

The only aftermarket system built for the TRX 90 that is designed specifically for modified engines.

Includes Tuneable spark arrestor.

#18333

$250.00

CLUTCH SPRINGS - DRIVE

Stronger springs to withstand increased horsepower.

#16781

$25.00

CLUTCH SHOES -

LIGHTENED (centrifugal)

CLUTCH SHOES

Send in your stock clutch shoes to be lightened by Powroll technicians -- giving the best power possible with our engine kits.  Lighter shoes allow the engine to rev higher before engagement - for no-bog holeshots!

#25421

$75.00